[Target] Decouple ObjCLanguageRuntime from LanguageRuntime

Summary:
ObjCLanguageRuntime was being pulled into LanguageRuntime because of
Breakpoint Preconditions. If we move BreakpointPrecondition out of Breakpoint,
we can extend the LanguageRuntime plugin interface so that LanguageRuntimes
can give us a BreakpointPrecondition for exceptions.

Differential Revision: https://reviews.llvm.org/D63181

llvm-svn: 364098

1 files changed, 12 insertions, 0 deletions

diff --git a/lldb/source/Target/ObjCLanguageRuntime.cpp b/lldb/source/Target/ObjCLanguageRuntime.cpp
index 3084b70e5c2..ef059a84b19 100644
--- a/lldb/source/Target/ObjCLanguageRuntime.cpp
+++ b/lldb/source/Target/ObjCLanguageRuntime.cpp
@@ -375,6 +375,18 @@ bool ObjCLanguageRuntime::GetTypeBitSize(const CompilerType &compiler_type,
   return found;
 }
 
+lldb::BreakpointPreconditionSP
+ObjCLanguageRuntime::GetBreakpointExceptionPrecondition(LanguageType language,
+                                                        bool throw_bp) {
+  if (language != eLanguageTypeObjC)
+    return lldb::BreakpointPreconditionSP();
+  if (!throw_bp)
+    return lldb::BreakpointPreconditionSP();
+  BreakpointPreconditionSP precondition_sp(
+      new ObjCLanguageRuntime::ObjCExceptionPrecondition());
+  return precondition_sp;
+}
+
 // Exception breakpoint Precondition class for ObjC:
 void ObjCLanguageRuntime::ObjCExceptionPrecondition::AddClassName(
     const char *class_name) {